Apparatus for compressing air.



PATENi En SEPT. 22, 1903.

. P. B.=.BA HMAN.-

APPARATUS FOR commsssme AIR.

AIPLIOATIOH FILED OCT. 11, 19 01 HO IODEL.

Witnesses.

@ka/mc Jag/W 2 a, WASNINGTDN a c wa /39,4721 I UNITED!" STATES iatented September 22, 1 963.

PATENT OFFICEQ.

APPARATUS FOR COM PRESSlNG'AlR SPECIFICATION forming part of Letters Patent No. 739,472, dated September 22, 1903.

' Application filed October 1'7, 1901. sfitl No. 78,941. (No model.)

To all whom it may concern:

Be it known that I, FRANK E. BAOHMAN, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Apparatus for Compressing Air, of which the following is a specification,

This invention relates to a simple and inexpensive apparatus for compressing air which is chiefly adapted to be used for blowing gasproducers or producing forced draft'for many purposes.

The object of this invention is to provide a simple,comparatively cheap, and easily-open ated apparatus which will take the place of expensive air-compressors, fans, and the like and furnish compressed air free from steam.

The invention relates to certain details of construction all of which will be fully and clearly hereinafter described and claimed,reference being had to the accompanying drawing, in which a sectional View through a preferred adaptation of the invention is shown.

The invention comprises a separating-tank, an ejector having connection with the separating-tank, and pipes for conducting the air and water from the separating-tank.

The separating-tank l, whileit may be in" various forms, is preferably constructed in the elongated form shown in the drawing. i

A pipe 2, connnected to asource of steam-.

' supply, has a steam-ejector 3 at its lower extreme which connects" to and ejects steam into a pipe 4; I

The body of the pipe 4 is preferably curved or bent to form a tortuous passage and thereby thoroughly mingle or mix the air, steam, and water passing'through it. The lower end "of the pipe 4 connects to the separating-tank at an intermediate point 5. e 7

An air-supply pipe 6 connects with the ejector to-supply the air, and a pipe 7, extending from a source of water-supply, connects to the pipe. 4 below the ejector and is provided with'a regulating-valve 8. The

steam-pipe 2 also has a watemregulating valve 9.

A discharge-pipe 10 for the water and condensed steam extends from the lower extreme of the separating-tank and bends .upward,

being carried to any point desired. The discharge-pipe is provided with an overflow-pipe 11. The air is conducted from the separating-tankto any desired location by a pipe 12,

- which is provided with a shut-off'valve 13.

The operation of this improved apparatus is as follows: The watert valve 8 and the steamvalve 9 being opened steam passes through the ejector and draws air in throughthe pipe 6 by suction. The air and steam passes into the pipe 4 and meets the cold water coming in through the pipe 7, which condenses the steam. Y The pressure of the water is neces- 'sarily greater than the air-pressure inthe pipe 4 in order that the water may flow in. The condensed steam, air, and water are thoroughly mixed and mingled while passing through'the pipe 4 and before reaching the separating-tank 1. The air separates from "the condensed steam and water when in the pipe 12, which conducts it to the desired location. The water flows out through the pipe 10. The volume of air compressed depends upon the size of the ejector, and the pressure 1 ofthe steam and the amount of air pressure developed will be equal the pressure due to the difference in the heightof the water in tank 1 and pipe 10. 4

This apparatus can be modified or changed invarious parts without departing from the principle or sacrificing any of the advantages thereof-for instance, a simple opening may be made for the entrance of air instead of employing the pipe 6-and I therefore reserve the right to any and allchanges or modifications which justly fall within the scope of the invention. V

I claim as my invention- In an apparatus of the character described the combination with a supporting-tank, and air-outlet pipe connected to the top of said tank, means for controlling the outlet of the air therefrom, and outlet means for water connected with the bottom of the said tankand provided with an overflow-pipe, a steam-inlet pipe secured in the side of said tank, a tortuous conneeting means between said inlet-pipe and the supporting-tank, an air-inlet I tortuous connecting means at a point below pipe secured to said tortuous means at the said steam-injector. upper end thereof, a steam-injector arranged Within a pocket at a juncture of said air-inlet FRANK BACHMAN' 5 pipe with the tortuous connecting means for Witnesses:

controlling the pressure of the steam thereto, L. M. SANGSTER,

and means for introducing Water into said GEO. A. NEUBAUER. 

